[(0,1),(1,2),(2,3),(1,4),(3,4),(4,5),(2,5),(5,6),(6,7),(3,7),(0,8),(7,8),(8,9),(9,10),(6,10),(10,11),(9,11),(11,12),(12,13),(13,14),(12,14),(14,15),(13,15),(15,16),(16,17),(17,18),(18,19),(17,19),(16,20),(19,20),(18,21),(21,22),(20,22),(21,23),(22,23),(23,24),(24,25),(25,26),(25,27),(24,28),(27,29),(29,30),(27,30),(30,31),(26,32),(31,32),(26,33),(28,34),(34,35),(31,35),(35,36),(29,37),(36,38),(33,38),(37,39),(33,39),(34,40),(36,40),(38,41),(28,41),(39,42),(41,43),(42,44),(44,45),(45,46),(37,47),(42,48),(47,48),(32,49),(44,50),(48,51),(43,52),(40,53),(43,54),(46,55),(45,56),(46,57),(47,58)]
[(0,1),(0,2),(2,3),(1,3),(3,4),(1,4),(2,5),(5,6),(4,6),(5,7),(7,8),(6,8),(7,9),(9,10),(9,11),(11,12),(10,12),(12,13),(8,13),(11,14),(13,14),(10,15),(15,16),(14,17),(16,18),(15,19),(19,20),(17,20),(18,21),(17,21),(19,22),(22,23),(23,24),(24,25),(25,26),(20,27),(18,28),(26,29),(25,29),(16,30),(21,31),(28,32),(29,33),(32,33),(22,34),(32,34),(28,35),(30,35),(33,36),(26,36),(27,37),(35,38),(34,38),(31,39),(37,39),(27,40),(31,41),(24,41),(38,42),(36,42),(41,43),(39,43),(43,44),(40,45),(45,46),(46,47),(30,47),(44,48),(37,49),(40,50),(48,51),(47,52),(46,53),(23,54),(45,55),(42,56),(48,57),(44,58)]
